Slag scraping mechanism of steel rolling heating furnace

Abstract

The utility model discloses a steel rolling heating furnace slag scraping mechanism which comprises a plurality of groups of lifting chains, a plurality of groups of lifting lugs, a first angle steel, a second angle steel, a connecting angle steel, a first slag scraping plate and a second slag scraping plate, the upper parts of the lifting chains are externally connected to an external structure, the lifting lugs are respectively arranged at the bottoms of the lifting chains, and the first angle steel and the second angle steel are connected with the connecting angle steel. The first angle steel is arranged on the lifting lug on one side, the second angle steel is arranged on the lifting lug on the other side, the connecting angle steel is welded to the first angle steel and the second angle steel respectively, the first slag scraping plate is connected to the connecting angle steel through bolts, and the second slag scraping plate is connected to the connecting angle steel through bolts. The utility model relates to the field of design of heating furnace maintenance equipment and slag scraping mechanisms, in particular to a slag scraping mechanism of a steel rolling heating furnace.

Description

Technical Field

[0001] The utility model relates to the field of heating furnace maintenance equipment and slag scraping mechanism design, in particular to a steel rolling heating furnace slag scraping mechanism. Background Art

[0002] The scraping mechanism of the steel rolling heating furnace is mainly used to transfer the oxidized slag and refractory materials that fall into the water seal groove in the heating furnace to the slag flushing groove. The scraping mechanism combines the movement of the heating furnace stepping mechanism to transfer the oxidized slag and refractory materials in the water seal from the high temperature side to the slag flushing groove on the low temperature side. Its functions and characteristics are as follows:

[0003] 1. Function: Transfer oxidized slag and part of refractory materials. During the normal production process of the heating furnace, the steel billet in the furnace will produce iron oxide scale during the heating process. When the iron oxide scale is generated to a certain thickness, it begins to peel off, and 70% of the peeled iron oxide scale falls into the water seal groove at the bottom of the furnace. During the production process, the water beam column refractory in the furnace will cause partial peeling of refractory materials into the water seal groove at the bottom of the furnace due to temperature changes and furnace gas scouring. The iron oxide scale and refractory materials in the water seal groove need to be transferred to the slag flushing groove in time, otherwise it will hinder the operation of the heating furnace stepping device, and too much slag accumulation in the water seal groove will affect the sealing of the heating furnace.

[0004] 2. Features: The scraping mechanism is fixedly connected to the sealing box, and is subjected to hard extrusion force with the oxide slag. The operating environment temperature is high (ambient temperature 100~200℃), and the water surface boundary position is prone to corrosion.

[0005] Current technology has the following disadvantages:

[0006] 1. The scraping mechanism uses a fixed connection method. The stepper mechanism is easily subjected to a large extrusion force during lifting, which causes the scraping mechanism to deform and the scraping plate to fall off.

[0007] 2. The angle steel of the scraper mechanism is too long and is easy to deform.

[0008] 3. The main structure of the scraper mechanism is made of ordinary carbon steel, which is easy to corrode at the water surface boundary.

[0009] 4. The scraping mechanism is difficult to repair and replace. Due to the high ambient temperature at the work site, the quality of manual repair is difficult to guarantee and rework is required many times. Since the scraping mechanism adopts a fixed connection method, disassembly and assembly are cumbersome and the construction time is long. Utility Model Content

[0010] The technical problem to be solved by the utility model is that the fixed connection mode is easy to cause deformation, and the angle steel is too long and is also easy to deform, and it is difficult to replace and repair.

[0011] In order to solve the above problems, the technical solution adopted by the utility model is as follows: The utility model is a slag scraping mechanism for a steel rolling heating furnace, including a lifting chain, a lifting ear, a first angle steel, a second angle steel, a connecting angle steel, a first scraping plate and a second scraping plate. The lifting chain is provided with multiple groups, and the upper part of the lifting chain is connected to the external structure. The lifting ear is provided with multiple groups, and the lifting ears are respectively arranged at the bottom of the lifting chain. The first angle steel is arranged on the lifting ear on one side, and the second angle steel is arranged on the lifting ear on the other side. The connecting angle steel is provided with multiple groups, and the connecting angle steels are respectively welded on the first angle steel and the second angle steel. The first scraping plate is connected to the connecting angle steel by bolts, and the second scraping plate is connected to the connecting angle steel by bolts.

[0012] Furthermore, a third angle steel is welded on one group of the connecting angle steels.

[0013] Furthermore, the first scraper plates and the second scraper plates are provided in multiple groups respectively.

[0014] The beneficial effects achieved by the utility model using the above structure are as follows:

[0015] 1. The scraping mechanism is fixed by a hanging chain. The oxidized slag in the water seal tank will not directly squeeze the scraping mechanism. The force on the scraping mechanism is reduced and its service life is increased by more than 2 times.

[0016] 2. The scraping mechanism is fixed with a hanging chain, which makes it more convenient to replace the scraping mechanism and can shorten the maintenance time by half.

[0017] 3. Shorten the length of the connecting angle steel, the overall strength of the scraping mechanism is higher, and the service life is increased by more than 2 times.

[0018] 4. The lifting chain at the interface of the water surface is made of 304 stainless steel, which can effectively prevent rust and increase the service life of the entire scraper mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a slag scraping mechanism for a steel rolling heating furnace proposed by the utility model;

[0020] Figure 2 This is a top view of a slag scraping mechanism for a steel rolling heating furnace proposed by the utility model;

[0021] Figure 3 This is a structural schematic diagram of a first scraper plate of a scraper mechanism for a steel rolling heating furnace proposed by the utility model;

[0022] Figure 4 The utility model is a structural schematic diagram of a second scraper plate of a scraper mechanism of a steel rolling heating furnace.

[0023] Among them, 1. lifting chain, 2. lifting ear, 3. first angle steel, 4. second angle steel, 5. connecting angle steel, 6. first scraper plate, 7. second scraper plate, 8. third angle steel. DETAILED DESCRIPTION

[0024] like Figure 1~Figure 4 As shown, the utility model is a slag scraping mechanism for a steel rolling heating furnace, comprising a lifting chain 1, a lifting lug 2, a first angle steel 3, a second angle steel 4, a connecting angle steel 5, a first scraping plate 6 and a second scraping plate 7. The lifting chain 1 is provided with multiple groups, and the upper part of the lifting chain 1 is externally connected to the external structure. The lifting lug 2 is provided with multiple groups, and the lifting lugs 2 are respectively arranged at the bottom of the lifting chain 1. The first angle steel 3 is arranged on the lifting lug 2 on one side, and the second angle steel 4 is arranged on the lifting lug 2 on the other side. The connecting angle steel 5 is provided with multiple groups, and the connecting angle steels 5 are respectively welded on the first angle steel 3 and the second angle steel 4. The first scraping plate 6 is connected to the connecting angle steel 5 by bolts, and the second scraping plate 7 is connected to the connecting angle steel 5 by bolts.

[0025] A third angle steel 8 is welded to a set of connecting angle steels 5 .

[0026] The first scraper blades 6 and the second scraper blades 7 are provided in multiple groups respectively.

[0027] During specific use: the lifting ear 2 holds the scraping mechanism to prevent it from falling down, ensuring that after the scraping mechanism is lifted to the uppermost position by the walking beam, the bottom plate of the water seal groove will not scrape the first scraping plate 6 and the second scraping plate 7. The scraping mechanism should be centrally arranged between the two sealing group covers. During the upward lifting process of the stepping machine, the iron oxide sheets accumulated in the water seal groove will support the first scraping plate 6 and the second scraping plate 7 of the scraping structure. Since the scraping mechanism is connected by the lifting chain 1, the scraping mechanism itself will not be subjected to a large extrusion force. The depth of the first scraping plate 6 and the second scraping plate 7 inserted into the oxidized slag is not very deep. Each reciprocating operation of the walking beam will scrape away the surface oxidized slag until the oxidized slag in the water seal groove is scraped clean.

[0028] It should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A slag scraping mechanism for a steel rolling heating furnace, characterized in that: It includes a lifting chain, a lifting ear, a first angle steel, a second angle steel, a connecting angle steel, a first scraper plate and a second scraper plate. The lifting chain is provided with multiple groups, and the upper part of the lifting chain is connected to the external structure. The lifting ears are provided with multiple groups, and the lifting ears are respectively arranged at the bottom of the lifting chain. The first angle steel is arranged on the lifting ear on one side, and the second angle steel is arranged on the lifting ear on the other side. The connecting angle steel is provided with multiple groups, and the connecting angle steels are respectively welded on the first angle steel and the second angle steel. The first scraper plate is connected to the connecting angle steel by bolts, and the second scraper plate is connected to the connecting angle steel by bolts.

2. A slag scraping mechanism for a steel rolling heating furnace according to claim 1, characterized in that: A third angle steel is welded on one set of the connecting angle steels.

3. The slag scraping mechanism for a steel rolling heating furnace according to claim 1, characterized in that: The first scraper blades and the second scraper blades are provided in multiple groups respectively.

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